Grinding in slide and triple valves



N0. 623,92I. Patented Apr; 25, I399. NI. LIMPERT. GRINDING IN SLIDE AND TRIPLE VALVES.

(Application filed Tan. 27, 1898.)

(No Model.)

NTTE TATES MICHAEL LIMPERT, OF PITTSBURG, PENNSYLVANIA.

GRINDING IN SLIDE AND TRIPLE VALVES.

SPECIFICATION forming part Of Letters Patent No. 623,921, dated April 25, 1899.

Application filed January 2'7, 1898. Serial No. 668,232. (No model.)

ing at Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Grinding in Slide and Triple Valves; and I do hereby declare the following to be a full, I

clear, and exact description thereof, reference being had to the accompanying drawings, which forma part of this specification.

My invention relates to mechanism for grinding slide and triple valves to their seats; and it consists of a rod adapted to be connected to the valve, means to exert pressure on the rod and valve to press the latter against the seat, and means to reciprocate the rod and valve.

Theinvention will be hereinafter more fully described, and its novel features defined in the claims.

In the drawings, Figure 1 is a perspective view, partly in section and partly broken away,showing my invention connected to a slide-valve to grind the latter to its seat. Fig. 2 is a top plan view of the rod, which is shown in Fig. l as connected to the valve. Fig. 3 is a side elevation of the spring employed to exert pressure on the rod and valve to press the latter against its seat. Fig. at is a side View of the rod, the spring being removed. Fig. 5 is a perspective view of the valve, and Fig. 6 is an end view of the valve-casing and valve-seat.

Similar letters of reference indicate similar parts in the respective figures.

A indicates the valve-casing, and O is the valve-seat.

D represents the valve which is to be ground in to fit the seat.

B indicates a rod provided with two hooks or projections F, adapted to engage the ends of the valve when the rod is inserted between the wings d thereof. The rod is also provided with a lug G intermediate the hooks F, adapted to engage the top' face of the valve when the rod B is in position to permit the latter to have a slight rocking movement, as will be referred to hereinafter. A recess is formed in the rod B, in which is seated a spring E, the latter being secured in position by a pin 6 or other suitable device. When the rod B is fitted on the valve D, the spring E is designed to engage the valve-casing opposite the valve-seat, and thus press the valve on the seat with a yielding pressure. The rod is also provided with a notch or re cess H near one end thereof.

As a means for reciprocating the valve on the seat for the purpose of grinding it in I provide a crank-wheel N, mounted on a suitable shaft 71, the latter being supported in suitable bearings and provided with a beltpulley 00, adapted to be driven from a source of power not shown.

K indicates a rock-shaft journaled in suitable bearings and having an arm L, which is connected by a link M to the crank-wheel N. The shaft K is also provided with another arm J, which is bifurcated at its free end to form the prongs j, and the rod B is adapted to fit between the prongs, with its notch H fitting over the arm, the latter being preferably fiattened, as shown in Fig. 1.

In operation the valve casing will be clamped on a suitable support R, the valve D be placed on the valve-seat, and the rod 13 fitted on the valve between the wings d and connected to the arm J. Any suitable abrading material may be placed on the valve-seat, such as emery, sand, or glass. Power being applied to the belt-pulley 0c, the crank-wheel N will be revolved, and thereby rock the shaft K. This will result in imparting a reciprocating movement to the rod B and valve D, and as the spring E will constantly exert a pressure on the valve the latter and the seat will be quickly ground down to make a perfeet bearing. The lugG will permit the rod B to rock on the valve D to accommodate the slight vertical movement of the end of the rod which is connected to the arm J.

I do not intend to restrict my invention to the precise details of construction shown, as it is obvious they may be modified in various ways without departing from the spirit of my invention.

Having described the invention, I claim- 1. In a means for grinding in valves to their seats, a rod adapted to be detachably connected to the valve and to be reciprocated to move the valve to and fro on its seat, and

tel-mediate the hooks adapted to engage the upper face of the valve to permit the rod to rock thereon,,an(l a spring secured to the rod and projecting therefrom and adapted to engage the valve-easin g opposite the valve-seat, substantially as and for the purpose specified.

Signed by me, at Pittsburg, Pennsylvania, 20 January 15, A. D. 1898.

MICHAEL LIMPERT.

Witnesses:

J. I5. LIMPERT, JOHN MeTIGHE. 

